National 9316 Differential Pinion Seal - Spring Loaded Multi-Lip Seal For Automotive Applications

About This Product

Alright gearheads and mechanics, this National 9316 pinion seal is exactly what you need when you're dealing with differential leaks or doing drivetrain maintenance. The spring-loaded multi-lip design provides superior sealing compared to basic single-lip seals, which is huge for preventing gear oil leaks that can lead to expensive differential damage. Made from polyacrylate material, it handles temperatures from -20°F to 300°F and resists EP (extreme pressure) lubricants commonly used in differentials. The construction provides high resistance to oxidation and ozone, with low swell in hydrocarbon fluids, meaning it maintains its sealing properties over time without degrading. National has been making quality seals for over 75 years, and their reputation for reliability means you're getting a component that will last. Whether you're repairing a leaky pinion seal, rebuilding a differential, or doing routine drivetrain maintenance, using a quality seal like this prevents comebacks and ensures your repair holds up. Installation requires proper tools and knowledge of differential setup, as the pinion seal sits at the front of the differential where the driveshaft connects. The precise manufacturing means it fits correctly without modification, saving you time and frustration during installation. Seriously, if you're going through the effort of differential work, using a premium seal like this National unit is cheap insurance against future leaks and potential drivetrain failure.